What was found
ON APPROACH, THE TAILROTOR PEDALS KICKED HARD LT AND RT, YAW SAS TRIM ACTUATOR LIGHT ILLUMINATED FOR 3 SECONDS AND THEN EXTINGUISHED AND PEDALS RETURNED TO NORMAL. MX PERSONNEL PERFORMED CHECKS OF THE AUTO PILOT SYS, CLEANED CONNECTIONS AT THE YAW SEMA AND YAW TRIM ACTUATOR AND THE TAIL ROTOR CONTROL SYS. A FLIGHT CHECK WAS PERFORMED WITH 4 TAKEOFFS AND LANDINGS AND ALL SYSTEMS PERFORMED AS DESIGNED AND PROBLEM, COULD NOT BE DUPLICATED AT THIS TIME.